package com.heima.comment.service.impl;

import java.math.BigDecimal;
import java.util.*;

import com.heima.aliyun.scan.GreenScan;
import com.heima.aliyun.scan.ScanResult;
import com.heima.comment.service.CommentRepayService;
import com.heima.common.exception.CustException;
import com.heima.feigns.ArticleFeign;
import com.heima.feigns.UserFeign;
import com.heima.model.article.pojos.ApArticle;
import com.heima.model.comment.dtos.CommentRepayDTO;
import com.heima.model.comment.dtos.CommentRepayLikeDTO;
import com.heima.model.comment.dtos.CommentRepaySaveDTO;
import com.heima.model.comment.pojos.ApComment;
import com.heima.model.comment.pojos.ApCommentLike;
import com.heima.model.comment.pojos.ApCommentRepay;
import com.heima.model.comment.pojos.ApCommentRepayLike;
import com.heima.model.comment.vos.ApCommentRepayVO;
import com.heima.model.comment.vos.ApCommentVo;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.heima.model.user.pojos.ApUser;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;

@Service
@Slf4j
public class CommentRepayServiceImpl implements CommentRepayService {
    @Autowired
    GreenScan greenScan;
    @Autowired
    MongoTemplate mongoTemplate;
    @Autowired
    UserFeign userFeign;

    @Override
    public ResponseResult loadCommentRepay(CommentRepayDTO dto) {
        //1. 校验参数
        //   评论id不能为空  size为null 或 0 设置为10  最小日期为空 设置为当前
        if (dto.getSize()==null||dto.getSize()==0) {
            dto.setSize(10);
        }
        if (dto.getMinDate()==null){
            dto.setMinDate(new Date());
        }

        //2. 条件查询评论回复信息
        //条件:  commentId = 评论id and createdTime 小于 minDate  创建时间 降序  limit size
        Query query = Query.query(Criteria.where("commentId").is(dto.getCommentId())
                .and("createdTime").lt(dto.getMinDate()));
        query.limit(dto.getSize());
        Sort sort = Sort.by(Sort.Direction.DESC, "createdTime");
        query.with(sort);

        List<ApCommentRepay> repayList = mongoTemplate.find(query, ApCommentRepay.class);

        //3. 检查是否登录
        ApUser user = AppThreadLocalUtils.getUser();
        if (user==null){
        //	3.1 如果未登录直接 返回评论回复列表
            return ResponseResult.okResult(repayList);
        }

        //	3.2 如果登录，需要判断哪些回复点过赞

        //	思路:

        // 基于当前列表 回复id集合  及  登录人id 查询回复点赞列表
        //   (将所有ApComment 转成 ApCommentVO , 点过赞的operation设置为0)

        //返回参数封装
        ArrayList<ApCommentRepayVO> repayVos = new ArrayList<>();

        for (ApCommentRepay apCommentRepay : repayList) {
            Query userLikeQuery = Query.query(Criteria.where("commentId").is(apCommentRepay.getId())
                    .and("authorId").is(user.getId()));
            ApCommentRepayLike commentRepayLike = mongoTemplate.findOne(userLikeQuery, ApCommentRepayLike.class);

            // 遍历 当前回复列表，将每一个回复信息 封装成 vo
            ApCommentRepayVO apCommentRepayVO = new ApCommentRepayVO();
            BeanUtils.copyProperties(apCommentRepay,apCommentRepayVO);

            // 判断当前回复id 在点赞信息中是否存在，如果存在 operation设置为0 不存在不做处理
            if (commentRepayLike!=null){
                apCommentRepayVO.setOperation((short)0);
            }
            repayVos.add(apCommentRepayVO);
        }

        return ResponseResult.okResult(repayVos);
    }

    @Override
    public ResponseResult saveCommentRepay(CommentRepaySaveDTO dto) {
        //1. 参数校验:
        //  是否登录  评论id是否为空  内容是否为空  内容是否大于140个字符
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null) {
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN);
        }

        //  回复内容安全校验
        try {
            ScanResult scanResult = greenScan.greenTextScan(dto.getContent());
            //  简单: 不校验      普通: 阿里云内容检查，有问题抛异常     困难：阿里云内容检查，有问题替换为**
            String filteredContent = scanResult.getFilteredContent();

            ResponseResult<ApUser> userById = userFeign.findUserById(user.getId());
            if (!userById.checkCode()) {
                CustException.cust(AppHttpCodeEnum.REMOTE_SERVER_ERROR);
            }
            ApUser apUser = userById.getData();
            //2. 根据评论id查询评论信息  检查是否存在
            Query query = Query.query(Criteria.where("id").is(dto.getCommentId()));
            ApComment apComment = mongoTemplate.findOne(query, ApComment.class);
            if (apComment == null) {
                CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
            }
            ApCommentRepay apCommentRepay = new ApCommentRepay();
            apCommentRepay.setAuthorId(apUser.getId());
            apCommentRepay.setAuthorName(apUser.getName());
            apCommentRepay.setCommentId(dto.getCommentId());
            if (filteredContent != null) {
                apCommentRepay.setContent(filteredContent);

            } else {
                apCommentRepay.setContent(dto.getContent());
            }
            apCommentRepay.setLikes(0);
            apCommentRepay.setLongitude(new BigDecimal("0"));
            apCommentRepay.setLatitude(new BigDecimal("0"));
            apCommentRepay.setAddress("");
            apCommentRepay.setCreatedTime(new Date());
            apCommentRepay.setUpdatedTime(new Date());

            //3. 保存评论回复信息
            mongoTemplate.save(apCommentRepay);

            //4. 修改评论信息中回复数量 + 1
            Update update = new Update();
            update.set("reply", apComment.getReply() + 1);
            update.set("updatedTime", new Date());
            mongoTemplate.updateMulti(query, update, ApComment.class);

        } catch (Exception e) {
            e.printStackTrace();
            log.info("保存回复时出现异常", e.getCause());
        }

        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult saveCommentRepayLike(CommentRepayLikeDTO dto) {
        //1. 校验参数
        //   回复id不能为空   operation 必须 0 或 1

        //   校验登录  (必须登录)
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null) {
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN);
        }

        //   校验回复信息是否存在
        Query query = Query.query(Criteria.where("id").is(dto.getCommentRepayId()));
        ApCommentRepay apCommentRepay = mongoTemplate.findOne(query, ApCommentRepay.class);
        if (apCommentRepay == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        //2. 如果是点赞  判断是否点过赞
        Query likeQuery = Query.query(Criteria.where("authorId").is(user.getId())
                .and("commentRepayId").is(dto.getCommentRepayId()));
        if (0 == dto.getOperation()) {
            ApCommentRepayLike commentRepayLike = mongoTemplate.findOne(likeQuery, ApCommentRepayLike.class);
            //判断是否点过赞
            if (commentRepayLike != null) {
                //  点过赞提示请勿重复点赞
                CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW, "请勿重复点赞");
            }
            //  未点过赞， 保存点赞信息
            ApCommentRepayLike apCommentRepayLike = new ApCommentRepayLike();
            apCommentRepayLike.setAuthorId(user.getId());
            apCommentRepayLike.setCommentRepayId(dto.getCommentRepayId());
            apCommentRepayLike.setOperation((short) 0);

            mongoTemplate.save(apCommentRepayLike);

            //  并将回复信息的点赞数量字段+1
            Integer likes = apCommentRepay.getLikes();
            Update update = new Update();
            update.set("likes",likes+1);
            update.set("updatedTime",new Date());
            mongoTemplate.updateMulti(query,update,ApCommentRepay.class);

        }else {
            //3. 如果是取消赞
            //  删除点赞信息
            mongoTemplate.remove(likeQuery,ApCommentRepayLike.class);

            // 并将回复信息的点赞数量字段 -1
            Integer likes = apCommentRepay.getLikes();
            if (likes>=1){
                Update update = new Update();
                update.set("likes",likes-1);
                update.set("updatedTime",new Date());
                mongoTemplate.updateMulti(query,update,ApCommentRepay.class);
            }
        }

        //4. 返回当前回复的最新点赞数量      数据的key:  likes
        ApCommentRepay repay = mongoTemplate.findOne(query, ApCommentRepay.class);
        Integer likes = repay.getLikes();
        Map<String, Object> map = new HashMap<>();
        map.put("likes",likes);

        return ResponseResult.okResult(map);
    }
}
